Method of making flanged nuts.



F. A. NEIDER.

METHOD OF MAKING FLANGBD NUTS.

Patented Apr.;25. 1911.

UNITED STATES PATENT OFFICE.

FRED A. NEIDER, OF CINCINNATI, OHIO.

METHOD OF MAKING FLANGED NUTS.

' To all whom it may concern:

Be it known that I, FRED A. Nnronn, a citizen of the United States ofAmerica, and resident of Cincinnati, Hamilton county, State of Ohio,have invented certain new and useful Improvements in Methods of MakingFlanged Nuts, of which the following is a specification.

An object of this invention is to produce a new and simple method ofmanufacturing tapered or conical threaded nuts.

A further object is to produce a method of producing conical threadedflanged nuts.

These and other objects I attain by means of the process hereindescribed as an embodi ment of my invention.

In the drawings accompanying this application and forming a partthereof, I have illustrated the apparatus employed in carrying forwardthe separate steps of the method or process described herein, and I havealso illustrated a nut as it appears throughout the various steps of theprocess of its manufacture.

In the drawings: Figure 1 is a perspective view of a nut formed in anysuitable manner. Fig. 2 is a perspective View illustrating the nut ofFig. 1, after one end has been compressed for the purpose of taperingthe threads of the nut. Fig. 8 is a sectional view of the nut, inconnection with a sectional view of a die in the act of compressing oneend of the nut. Fig. 4 is a perspective view of a flanged washer, whichforms a part of the nut manufactured in accordance with my process. Fig.5 is a perspective view of the nut, with the washer of 1g. 4 secured inplace on its compressed or tapered end. Fig. 6 is a sectional view ofthe nut and washer shown in Fig. 5, in connection with a partial sectionof a die, which is employed in forcing the washer in place and swaginglugs on the tapered end of the nut, for the purpose of securing thewasher to the nut. Fig. 7 is a pers ective view of a cap, which isadapted to t over the flange of the washer illustrated in Fig. 4. Fig. 8is a perspective view of a nut with the flanged washer and cap in place.Fig. 9 is a sectional view of the nut shown in ig. 8, in connection withdies for securing the cap in place on the flanged washer. Fig. 10 is anend view of the swaging die.

In Fig. 1, I have illustrated a nut 10, which is referably made byrolling a stri of wrought metal to the desired form, an

Specification of Letters Patent.

Application filed March 10, 1910.

it on the nut.

Patented Apr. 25, 1911.

Serial No. 548,452.

then cutting threads on the interior of the opening in the nut. A nutformed in this manner is illustrated in my Patent No. 904,555, ofNovember 21th, 1908. The nut may, however, be formed in any suit-ablemanner. The first operation, after the nut is formed, is to compress thewalls of one end of the nut, so 'as to form a nut with a tapered hole,or one which is conically threaded. I perform this operation by means ofa die 11, (illustrated in Fig. 3), one end of which is recessed toreceive the nut 10. The walls of the inner end of the recess are taperedas at 12, so that the die compresses the walls at one end of the nut, asit is forced over the nut. The die is provided with a cylindrical bore13, which extends longitudinally through it, and in which a plunger 14.is mounted. This plunger operates, after the pressing operation, toforce the nut out of the recess of the die.

In Fig. 2, I have illustrated in perspective the nut 10,'after one endhas been tapered by means of the die 11. The next operation is to securethe flange on the nut. I preferably provide a flanged washer 15, whichis provided with an opening 16, adapted to receive the tapered end ofthe nut 10. I present the nut 10 with the washer 15 in place on itsouter end to a die 17, which operates to force the washer 15 to placeand to secure The die 17 is provided with a recess 17, which receivesthe tapered nut, and which is so formed that lugs or wings 18'will beswaged on the nut 10, by the operation of forcing the die over thetapered nut. These lugs or wings are forced against the inner face ofthe flanged washer, and rigidly secure the washer in place on the nut,it being understood that the opening 16 is not large enough to receivethe undistorted portion of the nut 10.

After the washer is in place on the nut, I secure a cap 19 over theflange of the washer tocomplete the nut. In Fig. 9, I have illustrated aset of dies adapted to secure the cap 19 on the washer 15. One of thedies 20 is provided with a recess 21, in which the cap 19 fits. Theother die 22 is provided with a recess 23, which is adapted to remaivethe nut 10 and the washer 15 and to crimp the edge of the ca 19, so asto secure it to the washer. I rst locate the cap 19 on the washer 15,which is secured to the nut 10, and then introduce the cap into therecess 21 of the die 20, as shown in Fig.

9. I then move the die 22 down over the nut 10 and crimp the edge of thecap 19, and in this manner secure it to. the Washer 15. This operationcompletes the nut.

It Will be apparent that it is not essential to provide the flangedWasher 15, as a strai ht Washer may be employed and a suita le cap maybe secured in place on it. By employing my invention, I materiallysimplify the process of manufacturing conically threaded flanged nuts.Flanged nuts are formed with the flangedv portion integral with the nutport-ion, and, conse quently, if it-is desired to provide a tapered holein the nut, the hole must be drilled by a tapered drill, and'then tappedby a tapered tap, and but one nut can be tapped at a time. With myinvention I employ a straight tap, and can feed one of the nutportions=10 after another on to the tap, in the ordinary manner oftapping straight threads on nuts. After the nuts are tapped, I thencompress one end of the nut, as described, to taper the hole through thenut, or to form a nut With conical threads.

-What I claim is:

l. A process of'forming flanged nuts, which consists in tapping the nutportion, compressing one end of the tapped nut, for the purpose oftapering the tappedhole of the purpose of tapering the nut and locatinga Washer on the compressed end and securing the Washer in place.

2. A process of forming flanged nuts, Which consists in' tapping the nutportion, compressing one end of the tapped nut, for

the tapped hole,:-locatinga Washer on the compressed end of the nut, andsecuring the Washer in place by sWaging lugs on the nut portion.

3. A process .of forming flanged nuts,

Which consists in tapping-threads-in the nut portions, compressing oneend of the tapped nut, placinga flanged Washer on the ,conr pressed endof the nut, and securing a cap over the flanged Washer.

4. A process of formingkfianged nuts, Which consists in compressing oneend of a straight-threaded nut, and securing a Washer in place on thecompressed end of the nut.

5. 'A process of forming flanged nuts, Which consists in compressing oneend of a straight-threaded nut, securing a Washer in place on thecompressed end of thenut, and securing a cap on the Washer.

FRED A. NEIDER. Witnesses:

T E." W. MoGALLIsTER, WALTER MURRAY.

Copies of'this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, 'Washington, I). O.

